nuttx/Documentation/applications/testing/unity/index.rst
Vinicius May f6ecf80ebb Documentation: brand new layout for NuttX documentation.
The documentation grew one page at a time, so the tree follows the
history of who wrote what and not the shape of NuttX. Scheduling is
spread over three places, a driver page can sit above the subsystem
that owns it, and the front page lists everything at the same level.
That is a lot to face when all you want to know is where the scheduler
lives.

This change files every page under the code it describes. It is a move,
not a rewrite: outside the ten pages named below, every page keeps the
text that is already in master, and no page's text is deleted.

What it does:

* Groups the table of contents into nine chapters.
* Moves the OS subsystems under os/: scheduling, memory, drivers,
  filesystem, networking, IPC, interrupts, libs, time.
* Renames the platform pages to the names the source tree uses, and
  derives their tags from the tree instead of by hand.
* Splits guides/ by subject.
* Adds Documentation/redirects.py, with a rule for every page that left
  its old path, so old URLs keep working. The redirect page also carries
  a link's #anchor across to the new page.

Ten pages have text that is new or rewritten. Nine of them are the
landing page of a chapter, which has to exist for the new structure:

    index                  the front page
    os/index               OS Design
    os/scheduling/index    Scheduling
    os/interrupts/index    Interrupts
    os/ipc/index           IPC
    os/time/index          Time and timers
    about/index            About
    developing/index       Developing NuttX
    ReleaseNotes/index     Release notes

The tenth is os/libs/libbuiltin, the only page here with technical
content: libs/libbuiltin/ had no page at all. Five SVG diagrams come
with these pages, hand-written XML with no editor metadata.

Nothing outside Documentation/ is touched.

How it was checked:

* Sphinx builds with -W: no warnings, and no document left outside a
  toctree.
* A script, offered in the PR, proves the narrow claim this rests on.
  For every page outside the ten named above it erases what a move
  touches -- link target, path, tag line, toctree block, table border --
  from the whole old text and the whole new text, and requires the two
  to be byte for byte identical. It also requires every sentence of a
  deleted page to turn up somewhere, and every page that left its old
  path to have a redirect, from a URL that existed, to where its content
  went. It exits non-zero and names the page if any of that is not true,
  and it tests added pages too, so forgetting to declare one cannot make
  it pass.
* An independent audit checked 133 factual claims on these ten pages
  against the tree, one shell command per claim: 130 confirmed, 1
  refuted and fixed here, 2 not checkable.
* tools/checkpatch.sh is clean over the range.

The diff is large because moving a page changes every link that points
to it. Most of it is pure renames, and board pages that gained one tag
line.

Assisted-by: Claude:claude-opus-5
2026-10-08 01:40:54 +08:00

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=================================
``unity`` Unity testing framework
=================================
Unity is a unit testing framework for C developed by ThrowTheSwitch.org:
http://www.throwtheswitch.org/unity
.. note::
There is more detailed documentation than what can be found on the website on
the GitHub page. It can be found in `this collection of markdown
documents <https://github.com/ThrowTheSwitch/Unity/tree/master/docs>`_
It is very minimalist and is designed to also run on embedded systems. Unity is
highly configurable through the use of different macros. These are described in
the `configuration guide
<https://github.com/ThrowTheSwitch/Unity/blob/master/docs/UnityConfigurationGuide.md>`_.
Some of these configuration options are exposed in NuttX via the Kconfig
selection menu for the Unity test framework, but not all of them are
implemented.
.. note::
If some configuration options you'd like to use for Unity are missing from
NuttX, please open a pull request following the :doc:`contribution guidelines
</contributing/index>`.
Usage
=====
In order to test your application using the Unity framework in NuttX, you can
create a test application. Documentation for creating a custom NuttX application
can be found :doc:`here </guides/build/customapps>`.
Just mark your application to depend on any Unity options you use:
.. code-block:: kconfig
config MY_TESTS
tristate "Test cases"
depends on TESTING_UNITY
depends on TESTING_UNITY_EXCLUDE_SETJMP
depends on TESTING_UNITY_PRINT_FORMATTED
depends on MY_APPLICATION_CODE
In your application's main function, you can include the testing library and
write tests!
.. code-block:: c
#include <testing/unity.h>
void setUp(void) { /* Test setup code for Unity */ }
void tearDown(void) { /* Test tear-down code for Unity */ }
/* Short test case */
static void test_mything__passes(void)
{
int mynum = 0;
mynum++;
TEST_ASSERT_EQUAL(1, mynum);
}
int main(void)
{
UNITY_BEGIN();
RUN_TEST(test_mything__passes);
return UNITY_END();
}
Now when you build your code, your test application will be visible in NSH to
run. If you run it, you will see a test report!
.. code-block:: console
nsh> mytests
mytests_main.c:18:test_mything__passes:PASS
-----------------------
1 Tests 0 Failures 0 Ignored